Question

Two cars approach an ice-covered intersection. One car, of
mass1.25 103 kg, is initially traveling north at12.0
m/s. The other car, of mass1.61 103 kg, is initially traveling east at12.0
m/s. The cars reach the intersectionat the same instant, collide,
and move off coupled together. Findthe velocity of the center of
mass of the two-car system just afterthe collision.